I just installed Eclipse Neon. I also have Eclipse Mars still lying around on my system. When I opened Neon it asked if I wanted to convert my workspace and I did.
So I installed PyDev through Help/Install on Neon and now I go to File/New/PyDev Project and follow the prompts to create a new Python project. It does not show up in PyDev Package Explorer. If I try to create it again with the same name, it says I cannot because the project already exists.
When I first installed PyDev, 3 projects showed up in the PyDev Package Explorer, but they all contain folders underneath which cannot be expanded so I don't think those 3 projects are being handled correctly either. Actually they are closed projects I see, but I see at least 1 is a Java project, so it does not belong to that perspective.
So any idea why Neon/PyDev is not handling my Python projects correctly?
So from the above comments, there were two defaults for PyDev Package Explorer I was not expecting when I installed Neon (which may well not just apply to Neon, but other versions as well)